4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
26 * Copyright 2013 Saso Kiselkov. All rights reserved.
27 * Copyright (c) 2016 Actifio, Inc. All rights reserved.
30 #ifndef _SYS_SPA_IMPL_H
31 #define _SYS_SPA_IMPL_H
35 #include <sys/metaslab.h>
37 #include <sys/dsl_pool.h>
38 #include <sys/uberblock_impl.h>
39 #include <sys/zfs_context.h>
41 #include <sys/refcount.h>
42 #include <sys/bplist.h>
43 #include <sys/bpobj.h>
44 #include <sys/zfeature.h>
45 #include <zfeature_common.h>
51 typedef struct spa_error_entry
{
52 zbookmark_phys_t se_bookmark
;
57 typedef struct spa_history_phys
{
58 uint64_t sh_pool_create_len
; /* ending offset of zpool create */
59 uint64_t sh_phys_max_off
; /* physical EOF */
60 uint64_t sh_bof
; /* logical BOF */
61 uint64_t sh_eof
; /* logical EOF */
62 uint64_t sh_records_lost
; /* num of records overwritten */
66 uint64_t sav_object
; /* MOS object for device list */
67 nvlist_t
*sav_config
; /* cached device config */
68 vdev_t
**sav_vdevs
; /* devices */
69 int sav_count
; /* number devices */
70 boolean_t sav_sync
; /* sync the device list */
71 nvlist_t
**sav_pending
; /* pending device additions */
72 uint_t sav_npending
; /* # pending devices */
75 typedef struct spa_config_lock
{
77 kthread_t
*scl_writer
;
83 typedef struct spa_config_dirent
{
86 } spa_config_dirent_t
;
88 typedef enum zio_taskq_type
{
92 ZIO_TASKQ_INTERRUPT_HIGH
,
97 * State machine for the zpool-poolname process. The states transitions
98 * are done as follows:
101 * PROC_NONE -> PROC_CREATED spa_activate()
102 * PROC_CREATED -> PROC_ACTIVE spa_thread()
103 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
104 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
105 * PROC_GONE -> PROC_NONE spa_deactivate()
107 typedef enum spa_proc_state
{
108 SPA_PROC_NONE
, /* spa_proc = &p0, no process created */
109 SPA_PROC_CREATED
, /* spa_activate() has proc, is waiting */
110 SPA_PROC_ACTIVE
, /* taskqs created, spa_proc set */
111 SPA_PROC_DEACTIVATE
, /* spa_deactivate() requests process exit */
112 SPA_PROC_GONE
/* spa_thread() is exiting, spa_proc = &p0 */
115 typedef struct spa_taskqs
{
117 taskq_t
**stqs_taskq
;
120 typedef enum spa_all_vdev_zap_action
{
122 AVZ_ACTION_DESTROY
, /* Destroy all per-vdev ZAPs and the AVZ. */
123 AVZ_ACTION_REBUILD
/* Populate the new AVZ, see spa_avz_rebuild */
128 * Fields protected by spa_namespace_lock.
130 char spa_name
[ZFS_MAX_DATASET_NAME_LEN
]; /* pool name */
131 char *spa_comment
; /* comment */
132 avl_node_t spa_avl
; /* node in spa_namespace_avl */
133 nvlist_t
*spa_config
; /* last synced config */
134 nvlist_t
*spa_config_syncing
; /* currently syncing config */
135 nvlist_t
*spa_config_splitting
; /* config for splitting */
136 nvlist_t
*spa_load_info
; /* info and errors from load */
137 uint64_t spa_config_txg
; /* txg of last config change */
138 int spa_sync_pass
; /* iterate-to-convergence */
139 pool_state_t spa_state
; /* pool state */
140 int spa_inject_ref
; /* injection references */
141 uint8_t spa_sync_on
; /* sync threads are running */
142 spa_load_state_t spa_load_state
; /* current load operation */
143 uint64_t spa_import_flags
; /* import specific flags */
144 spa_taskqs_t spa_zio_taskq
[ZIO_TYPES
][ZIO_TASKQ_TYPES
];
145 dsl_pool_t
*spa_dsl_pool
;
146 boolean_t spa_is_initializing
; /* true while opening pool */
147 metaslab_class_t
*spa_normal_class
; /* normal data class */
148 metaslab_class_t
*spa_log_class
; /* intent log data class */
149 uint64_t spa_first_txg
; /* first txg after spa_open() */
150 uint64_t spa_final_txg
; /* txg of export/destroy */
151 uint64_t spa_freeze_txg
; /* freeze pool at this txg */
152 uint64_t spa_load_max_txg
; /* best initial ub_txg */
153 uint64_t spa_claim_max_txg
; /* highest claimed birth txg */
154 timespec_t spa_loaded_ts
; /* 1st successful open time */
155 objset_t
*spa_meta_objset
; /* copy of dp->dp_meta_objset */
156 kmutex_t spa_evicting_os_lock
; /* Evicting objset list lock */
157 list_t spa_evicting_os_list
; /* Objsets being evicted. */
158 kcondvar_t spa_evicting_os_cv
; /* Objset Eviction Completion */
159 txg_list_t spa_vdev_txg_list
; /* per-txg dirty vdev list */
160 vdev_t
*spa_root_vdev
; /* top-level vdev container */
161 int spa_min_ashift
; /* of vdevs in normal class */
162 int spa_max_ashift
; /* of vdevs in normal class */
163 uint64_t spa_config_guid
; /* config pool guid */
164 uint64_t spa_load_guid
; /* spa_load initialized guid */
165 uint64_t spa_last_synced_guid
; /* last synced guid */
166 list_t spa_config_dirty_list
; /* vdevs with dirty config */
167 list_t spa_state_dirty_list
; /* vdevs with dirty state */
168 kmutex_t spa_alloc_lock
;
169 avl_tree_t spa_alloc_tree
;
170 spa_aux_vdev_t spa_spares
; /* hot spares */
171 spa_aux_vdev_t spa_l2cache
; /* L2ARC cache devices */
172 nvlist_t
*spa_label_features
; /* Features for reading MOS */
173 uint64_t spa_config_object
; /* MOS object for pool config */
174 uint64_t spa_config_generation
; /* config generation number */
175 uint64_t spa_syncing_txg
; /* txg currently syncing */
176 bpobj_t spa_deferred_bpobj
; /* deferred-free bplist */
177 bplist_t spa_free_bplist
[TXG_SIZE
]; /* bplist of stuff to free */
178 zio_cksum_salt_t spa_cksum_salt
; /* secret salt for cksum */
179 /* checksum context templates */
180 kmutex_t spa_cksum_tmpls_lock
;
181 void *spa_cksum_tmpls
[ZIO_CHECKSUM_FUNCTIONS
];
182 uberblock_t spa_ubsync
; /* last synced uberblock */
183 uberblock_t spa_uberblock
; /* current uberblock */
184 boolean_t spa_extreme_rewind
; /* rewind past deferred frees */
185 uint64_t spa_last_io
; /* lbolt of last non-scan I/O */
186 kmutex_t spa_scrub_lock
; /* resilver/scrub lock */
187 uint64_t spa_scrub_inflight
; /* in-flight scrub I/Os */
188 kcondvar_t spa_scrub_io_cv
; /* scrub I/O completion */
189 uint8_t spa_scrub_active
; /* active or suspended? */
190 uint8_t spa_scrub_type
; /* type of scrub we're doing */
191 uint8_t spa_scrub_finished
; /* indicator to rotate logs */
192 uint8_t spa_scrub_started
; /* started since last boot */
193 uint8_t spa_scrub_reopen
; /* scrub doing vdev_reopen */
194 uint64_t spa_scan_pass_start
; /* start time per pass/reboot */
195 uint64_t spa_scan_pass_exam
; /* examined bytes per pass */
196 kmutex_t spa_async_lock
; /* protect async state */
197 kthread_t
*spa_async_thread
; /* thread doing async task */
198 int spa_async_suspended
; /* async tasks suspended */
199 kcondvar_t spa_async_cv
; /* wait for thread_exit() */
200 uint16_t spa_async_tasks
; /* async task mask */
201 char *spa_root
; /* alternate root directory */
202 uint64_t spa_ena
; /* spa-wide ereport ENA */
203 int spa_last_open_failed
; /* error if last open failed */
204 uint64_t spa_last_ubsync_txg
; /* "best" uberblock txg */
205 uint64_t spa_last_ubsync_txg_ts
; /* timestamp from that ub */
206 uint64_t spa_load_txg
; /* ub txg that loaded */
207 uint64_t spa_load_txg_ts
; /* timestamp from that ub */
208 uint64_t spa_load_meta_errors
; /* verify metadata err count */
209 uint64_t spa_load_data_errors
; /* verify data err count */
210 uint64_t spa_verify_min_txg
; /* start txg of verify scrub */
211 kmutex_t spa_errlog_lock
; /* error log lock */
212 uint64_t spa_errlog_last
; /* last error log object */
213 uint64_t spa_errlog_scrub
; /* scrub error log object */
214 kmutex_t spa_errlist_lock
; /* error list/ereport lock */
215 avl_tree_t spa_errlist_last
; /* last error list */
216 avl_tree_t spa_errlist_scrub
; /* scrub error list */
217 uint64_t spa_deflate
; /* should we deflate? */
218 uint64_t spa_history
; /* history object */
219 kmutex_t spa_history_lock
; /* history lock */
220 vdev_t
*spa_pending_vdev
; /* pending vdev additions */
221 kmutex_t spa_props_lock
; /* property lock */
222 uint64_t spa_pool_props_object
; /* object for properties */
223 uint64_t spa_bootfs
; /* default boot filesystem */
224 uint64_t spa_failmode
; /* failure mode for the pool */
225 uint64_t spa_delegation
; /* delegation on/off */
226 list_t spa_config_list
; /* previous cache file(s) */
227 /* per-CPU array of root of async I/O: */
228 zio_t
**spa_async_zio_root
;
229 zio_t
*spa_suspend_zio_root
; /* root of all suspended I/O */
230 kmutex_t spa_suspend_lock
; /* protects suspend_zio_root */
231 kcondvar_t spa_suspend_cv
; /* notification of resume */
232 uint8_t spa_suspended
; /* pool is suspended */
233 uint8_t spa_claiming
; /* pool is doing zil_claim() */
234 boolean_t spa_debug
; /* debug enabled? */
235 boolean_t spa_is_root
; /* pool is root */
236 int spa_minref
; /* num refs when first opened */
237 int spa_mode
; /* FREAD | FWRITE */
238 spa_log_state_t spa_log_state
; /* log state */
239 uint64_t spa_autoexpand
; /* lun expansion on/off */
240 ddt_t
*spa_ddt
[ZIO_CHECKSUM_FUNCTIONS
]; /* in-core DDTs */
241 uint64_t spa_ddt_stat_object
; /* DDT statistics */
242 uint64_t spa_dedup_dspace
; /* Cache get_dedup_dspace() */
243 uint64_t spa_dedup_ditto
; /* dedup ditto threshold */
244 uint64_t spa_dedup_checksum
; /* default dedup checksum */
245 uint64_t spa_dspace
; /* dspace in normal class */
246 kmutex_t spa_vdev_top_lock
; /* dueling offline/remove */
247 kmutex_t spa_proc_lock
; /* protects spa_proc* */
248 kcondvar_t spa_proc_cv
; /* spa_proc_state transitions */
249 spa_proc_state_t spa_proc_state
; /* see definition */
250 proc_t
*spa_proc
; /* "zpool-poolname" process */
251 uint64_t spa_did
; /* if procp != p0, did of t1 */
252 boolean_t spa_autoreplace
; /* autoreplace set in open */
253 int spa_vdev_locks
; /* locks grabbed */
254 uint64_t spa_creation_version
; /* version at pool creation */
255 uint64_t spa_prev_software_version
; /* See ub_software_version */
256 uint64_t spa_feat_for_write_obj
; /* required to write to pool */
257 uint64_t spa_feat_for_read_obj
; /* required to read from pool */
258 uint64_t spa_feat_desc_obj
; /* Feature descriptions */
259 uint64_t spa_feat_enabled_txg_obj
; /* Feature enabled txg */
260 kmutex_t spa_feat_stats_lock
; /* protects spa_feat_stats */
261 nvlist_t
*spa_feat_stats
; /* Cache of enabled features */
262 /* cache feature refcounts */
263 uint64_t spa_feat_refcount_cache
[SPA_FEATURES
];
264 taskqid_t spa_deadman_tqid
; /* Task id */
265 uint64_t spa_deadman_calls
; /* number of deadman calls */
266 hrtime_t spa_sync_starttime
; /* starting time of spa_sync */
267 uint64_t spa_deadman_synctime
; /* deadman expiration timer */
268 uint64_t spa_all_vdev_zaps
; /* ZAP of per-vd ZAP obj #s */
269 spa_avz_action_t spa_avz_action
; /* destroy/rebuild AVZ? */
270 uint64_t spa_errata
; /* errata issues detected */
271 spa_stats_t spa_stats
; /* assorted spa statistics */
272 hrtime_t spa_ccw_fail_time
; /* Conf cache write fail time */
273 taskq_t
*spa_zvol_taskq
; /* Taskq for minor management */
276 * spa_refcount & spa_config_lock must be the last elements
277 * because refcount_t changes size based on compilation options.
278 * In order for the MDB module to function correctly, the other
279 * fields must remain in the same location.
281 spa_config_lock_t spa_config_lock
[SCL_LOCKS
]; /* config changes */
282 refcount_t spa_refcount
; /* number of opens */
284 taskq_t
*spa_upgrade_taskq
; /* taskq for upgrade jobs */
287 extern char *spa_config_path
;
289 extern void spa_taskq_dispatch_ent(spa_t
*spa
, zio_type_t t
, zio_taskq_type_t q
,
290 task_func_t
*func
, void *arg
, uint_t flags
, taskq_ent_t
*ent
);
291 extern void spa_taskq_dispatch_sync(spa_t
*, zio_type_t t
, zio_taskq_type_t q
,
292 task_func_t
*func
, void *arg
, uint_t flags
);
299 #endif /* _SYS_SPA_IMPL_H */